<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Linux drivers for Intel-Braswell N3000 not detecting displays correctly" href="https://bugs.freedesktop.org/show_bug.cgi?id=100553#c3">Comment # 3</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Linux drivers for Intel-Braswell N3000 not detecting displays correctly" href="https://bugs.freedesktop.org/show_bug.cgi?id=100553">bug 100553</a> from <a class="email" href="mailto:mw@3cte.pl" title="Marek Wilczewski <mw@3cte.pl>"> Marek Wilczewski</a> <pre>We have verified suggested kernel - no change. After digging - problem is related to i915 DRM driver. This driver is using "platform default" DDC bus mappings that is valid for CRB, and unlikely usefull for many other systems. VBT configuration is not used for some reason. I've modified driver to use DDC mappings as on our platform - HDMI is detected now. Default configuration from CRB - pipe B using DDC-B will not work correctly on most systems with LFP - usually LFP will be eDP, and external display (pipe C) will be using DDC-B - such configuration is also used on another intel ref. design with Braswell. //Marek.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>